About the book I'm reading

Well I think it means it is a true story of an Indian that is at one time lived on the reservation, but now goes to the white people school.I think the author wrote it because it was about him. He was trying to say through the title that he was an Indian on the rez, but at school he was a different person.He went to the white people school because he wanted to be something. He did not want to live on the rez and be a nobody, he wanted to go somewhere to have a little bit of hope.